<?php
/**
 *Copyright (c) <2017> <copyright taodingfei>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

namespace Themis\Container\Dependency;

use Themis\Contracts\Container\Dependency\DependencyInterface;

class ClosureDependency implements DependencyInterface
{

    /**
     * @var array $closures
     */
    private $closures;

    /**
     * ClosureDependency constructor.
     * @param array $closures
     */
    public function __construct($closures=array())
    {
        $this->closures=$closures;
    }

    /**
     * 判断$abstract依赖是否存在
     *
     * @param string $abstract
     * @return bool
     */
    public function has($abstract)
    {
        return array_key_exists($abstract, $this->closures);
    }

    /**
     * 由$abstract获取依赖
     *
     * @param string $abstract
     * @return mixed
     */
    public function get($abstract)
    {
        return $this->closures[$abstract];
    }

    /**
     * 添加依赖
     *
     * @param string $abstract
     * @param string|object|\Closure $concrete
     * @return void
     */
    public function set($abstract, $concrete)
    {
        if($concrete instanceof \Closure){
            $this->closures[$abstract]=$concrete;
        }
    }
}